Sleep Spell
D&D Description of the Sleep Spell : A sleep spell causes a magical slumber to come upon 4 Hit Dice of creatures. Creatures with the fewest HD are affected first.
Among creatures with equal HD, those who are closest to the spell's point of origin are affected first. Hit Dice that are not sufficient to affect a creature are wasted.
Deeper info on this Dungeons & Dragons Sleep Spell
Note: Add a Reply about how you have applied the use of the Sleep spell in a previous Dungeons & Dragons scenario.